Carbon-13 Nuclear Magnetic Resonance Study of Canthin-6-one Alkaloids

Abstract

The carbon-13 nuclear magnetic resonance chemical shift assignments for several canthin-6-one alkaloids isolated from Ailanthus altissima Swingle and Picrasma quassioides Bennet, made on the basis of two-dimensional 13C—1H chemical shift correlation, 13C—1H heteronuclear couplings, and long-range selective 1H decoupling experiments are reported. © 1985, The Pharmaceutical Society of Japan. All rights reserved.